Having only recently moved into the area, we discovered Moors Valley Park by accident. What a great mistake to make!! There is so much to do for all the family, and is cheap day out as you only need to pay for parking.
If you're local to the park, it's well worth getting a pass for the car park. We have just paid £66 for the year to get both our cars in at any time. Well worth the price, and means when friends come to stay, we pile into our cars so we don't need to pay for parking at all.
There is so much to do too. The place is huge and well laid out - and we've definately not seen the whole park yet! Near the entrance are 2 play areas, one designed for smaller children set in a large sand pit, and another for bigger kids with wooden climbing activities, zip wire and slides. Behind this is a lovely lake to walk around, with a nature trail behind that (which goes around the golf club). For a couple of pounds, the shop sells a variety of different activity packs which keep you going for ages. We have the nature trail pack, and still have not completed all 12 points on it!
If you're up for a challenge, Go Ape is available at additional charge throughout the park, or you can hire their segways as a different way to get around. I prefer to stay on the ground and watch all the mad people swinging through the trees instead!
My two kids love the play trail, which gets you walking around the large grounds, stopping off at a variety of kid friendly activities ranging from a maze, to tunnels and a tree top trail.
If you're a keen cyclist there are plenty of trails for you to follow too, and you can hire bikes there if you do not wish to take your own. You can also complete a fitness trail around the park, with various exercises listed throughout to get your blood pumping.
There's plenty of places to stop for a picnic, just be prepared to take all your rubbish home afterwards as there are no bins available.
Overall, it's a great place for everyone to enjoy.